IBook G3 Won't Chime - But Keyboards Lights are ON

My ibook was working fine, then I closed it so I could bring it into another room and then the computer became unresponsive w/ a black screen. I tried resetting the power management as instructed in the Apple Support and the only thing that happens is the power seems to be on because the green keyboard lights light but it's as if the computer never boots (no chimes and cannot hear volume up and down noise and cannot open the disk drive). Any suggestions? I've had the logic board replaced TWICE. Highly annoying! The last time the computer was sent back to me as a clean slate so I lost everything. I don't think it's the Logic board this time though because the two times that the logic board went bad, I could always here the reboot chimes and the volume indicator sounds. Any suggestions would be greatly appreciated. Thanks in advance.
ibook G700mhz Mac OS X (10.4.4) Logic Board Replaced TWICE

Have you tried resetting the PMU?
The PMU (Power Management Unit) controls the charging function, so resetting it may help.
If resetting the PMU doesn't help, then I would recommend trying a known good adapter.
The iBook is acting like my husband's did when the power input (DC-in) board was damaged, so if resetting the PMU didn't help and a new adapter doesn't work, either, you may be looking at needing to replace the power input board (the part of the iBook which includes the adapter port).
Please let us know how things go for you.

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i m using mac pro 13... suddenly lights of my the keyboard is went off...i restart the machine by nothing happen.. the problem is still same only..plz help me out...
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What do you have in System Preferences, Keyboard under "Adjust keyboard brightness..."?
What happens when you push F6 to increase the keyboard light intensity?
Normally, if you have that checked, the keyboard lights only come on if the ambient light level is sufficiently low. They go out when the light level gets high enough. (Sorry if I am stating the obvious.) The sensor is at the top of the display, where the camera is. If you cover the camera lens, do the lights come on? (You may have to turn up the light intensity with F6.)
Try unchecking that preference box.
If nothing else works, try resetting the NVRAM.
If that doesn't work, you probably will have to take your machine in for servicing.

IBook dead (no chime, no keyboard light, nothing)

Hi there,
I have been reading for a while the posts regarding the Logic Board problem on iBooks.
I wonder if someone might give me a hand on this.
My iBook @ 700 MHz died last year, I did not fixed b/c it is really expensive.
Now, the thing that makes me wonder if the problem is the Logic Board is that mine does absolutely nothing when turned on, no matter if leave the battery or not, and nothing happens after PMU reset, etc.
Does anyone know if for instance, the HDD dies, when the iBooks boot, do you get to see the Apple grey background, or hear the chime?
Thank you very much.

It's not a power issue, then, if the iBook and
adapter are charging the batteries.
It's possible that it may be the power switch
itself.
Try the tips in Apple's Knowledge base article on
troubleshooting portables that won't turn on or start
up:
http://docs.info.apple.com/article.html?artnum=50959
Thanks for the reply, but nothing. I still can't get nothing out of the iBook. Tried all the steps listed on the page, and the iBook does nothing at all, except charging the batteries when plugged in
Any ideas what should I try next? There is sort of an Apple store here in Buenos Aires, but, if the Apple Care people in the USA told me that the fix would be something like 500 $, here they will charge 3 times that.

Blank screen on start up, no chimes or keyboard light

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...this worked for 48 hours at which time the problem came back...
This is the time period that I was commenting on. If something was used during that time that corrupted the OS, it would cause the situation you are in.
If everything is perfect with the OS then something is wrong with the hard drive or the motherboard's interface to the hard drive.

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My Macbook Pro don't start anymore. The powerlight is flashing about 2 seconds.
The DVD-drive is starting and the disk turns on and is running.
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Before the actual situation, the computer hang up in iPoto with a flickering screen.
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I'm having precisely this problem myself. For what it's worth, my macbook suffered a pretty devastating crash immediately before this happened. (I was playing a game and it completely crashed during play and shut down.)

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Have have purchased a MacBook Air 13" and as I went to go turn the volume up, I pushed the power button instead, now the display is black and the keyboard lights are still on! I don't no what to do plez help

In OS X Mavericks behavior of the power button changed.
Power button /sleep function
http://support.apple.com/kb/HT5869
A new Mac comes with 90 days of free tech support from AppleCare.
AppleCare: 1-800-275-2273
Best.

Keyboard lights will not stay off no matter what I do on my MacBook Pro. Why??

I've got a MacBook Pro 2.4 GHz Core 2 Duo.
I have ALWAYS left the keyboard lights off for the 4 years I have had it.
But lately, no matter what settings I change or what I try, I cannot PREVENT the keyboard lights from coming on when I've been away from the computer for a long period of time.
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From reading up of other forums with the same problem i have come up with two reasons why it is doing that.
first try doing a smc reset
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Is your system otherwise stable and reboots reliably?
Then use this installer:
https://support.lenovo.com/us/en/downloads/ds029169
Try to close every background program (especially those that interface with hardware like TPFanControl, as well as anti-virus), and turn off your internet. This should reduce the risks.
If you want to be absolutely safe, and have spare CD-Rs on hand, use the bootable CD method:
http://support.lenovo.com/us/en/downloads/ds029170

How can I get my keyboard lights to come on?

How can I get my keyboard lights to come on? When I press the button to turn them up higher, I get a sign meaning I cannot do that. Any help?

MegoStello,
There are a few situations when you won't see the keyboard light up as much as you might. If you're in a bright place or outside, the keyboard backlight won't come on. If you're on battery, your MBP may reduce power consumption by cutting off your backlit keyboard.
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MegoStello, if you found this info moderately useful, let me know in this thread. That's how I know if my info is what you need!

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Just incase people have the same issue down the line, I managed to fix this problem myself within 5 minutes.
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I have the latest BIOS update, Installed System Event Utility, restarted. Pressed f5, and they still only flash. HELP laptop is less than a week old.

Hi there@PackerFan_69
Welcome to the HP Support Forums! It is a great place to find the help you need, both from other users, HP experts and other support personnel.
I believe you are saying that the keyboard lights are not working, please correct me if I am wrong.
Also, please verify and post the full product number for your notebook. See the following, if you need help with that information. How Do I Find My Model Number or Product Number?
Any other details you can give me would also be helpful. However, as it is such a new notebook, and to get you up and running faster you can also call our technical support at 800-474-6836. If you live outside the US/Canada Region, please click the link below to get the support number for your region.
http://www8.hp.com/us/en/contact-hp/ww-phone-assist.html
Malygris1
I work on behalf of HP
Please click Accept as Solution if you feel my post solved your issue, it will help others find the solution.
Click Kudos Thumbs Up on the right to say “Thanks” for helping!

IBook G3 Won't Chime - But Keyboards Lights are ON

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